package cn.wang.heng.servlet;

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

public class wang extends HttpServlet {

	/**
	 * Constructor of the object.
	 */
	public wang() {
		super();
	}

	/**
	 * Destruction of the servlet. <br>
	 */
	public void destroy() {
		super.destroy(); // Just puts "destroy" string in log
		// Put your code here
	}

	/**
	 * The doGet method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to get.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		doPost(request,response);
	}

	/**
	 * The doPost method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to post.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		response.setContentType("text/html");
		PrintWriter out = response.getWriter();
		String path = request.getContextPath();
		
		HttpSession session=request.getSession();
		
		String uname = request.getParameter("uname");
		String upass = request.getParameter("upass");
		out.print(uname);
		out.print(upass+"<br>");
		try{
		
			Class.forName("com.mysql.jdbc.Driver").newInstance();
			Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/dianshang?characterEncoding=utf8","root","123456");
			String rs = "select * from admit where admitname=? and admitpass=?";
			PreparedStatement ps = con.prepareStatement(rs);
			ps.setString(1, uname);
			ps.setString(2, upass);
			out.print(uname);
			out.print(upass+"<br>");
			ResultSet re = ps.executeQuery();
			
			out.print(uname);
			out.print(upass+"<br>");
			if(re.next())
			{
				session.setAttribute("user", uname);
				response.sendRedirect(path+"/houtai.jsp");
			}
			else
			{
				response.sendRedirect(path+"/show.jsp");
			}
			
			
		}catch(Exception ex){
			ex.printStackTrace();
		}
	}

	/**
	 * Initialization of the servlet. <br>
	 *
	 * @throws ServletException if an error occurs
	 */
	public void init() throws ServletException {
		// Put your code here
	}

}
